Ke hoʻomohala nei nā kānaka ʻepekema o ke Keʻena Kemika o ka Russian State Agrarian University-Timiryazev Agricultural Academy i kahi mea kanu kūikawā e pili ana i ka magnesium-ammonium phosphate.
Aia ka huahana hou i ʻekolu mau mea nui no nā mea kanu: magnesium, ammonium a me phosphates. ʻO ka hui pū ʻana o kēia mau mea e lilo ai ka mea momona i mea kūpono no ka hoʻonui ʻana i ka momona o ka lepo a me ka hua i nā pae āpau o ka ulu ʻana.